I have been dealing with this a long time.I have no power engine smoking and fouling plugs.This is what I have done so far.I drained gas tank changed water seporator filter a couple of times.I had small leak in oil hose changed hose and oil filter sensor.I have fuel leaking in to air intake manifold so I bought new vst and regulator.Then pulled injectors out and had them cleaned and flow tested they were not bad.I am thinking maybe high pressure fuel pump or tps.Need help
